DSX840GA 13.500MHz DSX840GA 14.31818MHZ DSX840GA 16.000MHZ DSX840GA 16.0015M DSX840GA 16MHZ DSX840GA 18.432MHZ DSX840GA 18.750MHZ DSX840GA 24.576M DSX840GA 24.576MHZ DSX840GA 25M